/**
 * 获取元素的outerHTML
 */
$.fn.outerHTML = function() {

	// IE, Chrome & Safari will comply with the non-standard outerHTML, all
	// others (FF) will have a fall-back for cloning
	return (!this.length) ? this : (this[0].outerHTML || (function(el) {
		var div = document.createElement('div');
		div.appendChild(el.cloneNode(true));
		var contents = div.innerHTML;
		div = null;
		return contents;
	})(this[0]));

};
